EXHIBIT 10.1



     AMENDMENT  No. 5, dated as of January 1 , 2003,  to  AMENDED  AND  RESTATED
MANAGEMENT  AGREEMENT,  dated as of January 1, 1999, as amended by Amendment No.
1, dated as of January  1, 2000,  Amendment  No. 2, dated as of January 1, 2001,
Amendment  No. 3,  dated as of June 27,  2001 and  Amendment  No. 4, dated as of
January 1, 2002 (as so amended, the "Agreement"), by and among G-I Holdings Inc.
(formerly   known  as  GAF  Building   Materials   Corporation),   Merick  Inc.,
International  Specialty  Products Inc.  (formerly  known as ISP Holdings  Inc.)
("ISP" or "New ISP"), ISP Investco LLC ("Investco"),  GAF Broadcasting  Company,
Inc.,  Building  Materials  Corporation of America ("BMCA"),  and ISP Management
Company, Inc. (the "Company"), as assignee of ISP Chemco Inc. (formerly known as
ISP Opco Holdings Inc.). Capitalized terms used and not otherwise defined herein
shall have the meanings ascribed to them in the Agreement.


         WHEREAS, in accordance with Section 7 of the Agreement, the parties
desire to adjust the management fees payable to the Company under the Agreement,
effective January 1, 2003, in order to reflect the costs to the Company of
providing services thereunder;

         NOW, THEREFORE, the parties hereby amend the Agreement as follows:

         1.       Section 3 of the Agreement is amended, effective as of
                  January 1, 2003, to read in its entirety as follows:

                  "In consideration of the Company providing Services hereunder,
                  each of the corporations listed below shall pay to the Company
                  a management fee (the "Management Fee") at the following
                  respective rates for the quarter ending March 31, 2003 and for
                  each quarter thereafter for which this Agreement has been
                  extended as provided in Section 1 of this Agreement: BMCA (on
                  behalf of itself, its parents and its subsidiaries) -
                  $1,202,500, ISP - $25,000 and, Investco (on behalf of itself
                  and its subsidiaries) - $1,089,500. The Management Fee shall
                  be payable monthly in arrears.

                  In addition to the Management Fee, a wholly owned subsidiary
                  of BMCA shall pay to Company (as successor to both the
                  overlandlord's and sublandlord's interests in the subject real
                  property) rent payments pursuant to and in accordance with the
                  terms of the Sublease (as amended) between such wholly owned
                  subsidiary of BMCA and Company, the form of which is attached
                  as Exhibit A hereto and made a part hereof.

                  In consideration of BMCA providing G-I Services hereunder, G-I
                  Holdings (on behalf of itself and its subsidiaries other than
                  BMCA and BMCA's subsidiaries) shall pay to BMCA a management
                  fee (the "G-I Management Fee") at the rate of $208,000 for the
                  quarter ended March 31, 2003 and for each quarter thereafter
                  for which this Agreement has been extended as provided in
                  Section 1 of this Agreement. The G-I Management Fee shall be
                  payable monthly in arrears."

   2. Exhibit A to the Agreement is hereby amended to substitute therefore
Exhibit A to this Amendment.





   3. In all other respects, the Agreement as previously amended shall remain in
full force and effect.


   4. This Amendment is subject to the approval of the Board of Directors of the
Company.


   5. This Amendment may be executed in one or more counterparts, each of which
shall be an original but all of which, taken together, shall constitute one and
the same instrument. Failure by any one party to execute this Amendment shall
not affect the rights and obligations of any other party signatory hereto.


         IN WITNESS WHEREOF, the parties have executed this Amendment on the
date and year first above written.

G-I HOLDINGS INC.                          GAF BROADCASTING COMPANY, INC.

By:   /s/ Richard A. Weinberg              By:   /s/ Susan B. Yoss
     ------------------------                    ------------------
Name:  Richard A. Weinberg                 Name:  Susan B. Yoss
Title:    President, Chief Executive       Title:  Senior Vice President,
             Officer and                             Chief Financial
             General Counsel                         Officer and Treasurer

MERICK INC.                               BUILDING MATERIALS CORPORATION
                                          OF AMERICA
By:   /s/ Susan B. Yoss
- -----------------------
Name:  Susan B. Yoss                      By:     /s/ William W. Collins
                                                -------------------------
Title:    Senior Vice President,                 Name:  William W. Collins
             Chief Financial Officer             Title:  President and
             and Treasurer                                 Chief Executive
                                                           Officer

INTERNATIONAL SPECIALTY PRODUCTS INC.    ISP MANAGEMENT COMPANY, INC.

By:   /s/ Neal E. Murphy                 By:    /s/ Neal E. Murphy
     -------------------                       --------------------
       Name: Neal E. Murphy                     Name: Neal E. Murphy
       Title:  Senior Vice President            Title:  Senior Vice
                 and Chief Financial                      President and
                 Officer                                  Chief Financial
                                                          Officer

                                         ISP INVESTCO LLC
                                         By International Specialty
                                         Holdings Inc., its sole member


                                         By:  /s/ Susan B. Yoss
                                              --------------------
                                              Name:  Susan B. Yoss
                                              Title:  Executive Vice
                                                      President - Finance
                                                      and Treasurer